Cover of a telephone handset



FIG. 1 is a bottom, front and right side perspective view showing our new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a plan bottom view thereof; and,

FIG. 7 is a plan top view thereof. 

The ornamental design for a cover of a telephone handset, as shown and described. 